Mechanical (One the lab we called these physical and biological) and Chemical
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baam
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shark
Other team loses 20 points!
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shark
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banana
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15
What is a dependent variable?
The variable that you MEASURE (time to do the tasks)
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15
What is a parent atom?
The radioactive form of the element (potential to change).
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15
Why are most fossils invertebrates?
Invertebrates often have shells or exoskeletons that preserve well, also more than 95% of all organisms today are invertebrates.
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15
Explain why geologists, paleontologists and other members of the scientific community use relative dating so often?
Relative Dating is cheaper and you may apply it at the site of discovery, this method is regularly used by geologists for most purposes.
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15
What is weathering?
Weathering is the process of breaking rocks into smaller pieces.
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trap
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shark
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shark
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lifesaver
Give 10 points!
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15
What are the four types of boundaries discussed?
Divergent, convergent- collisional, transform, and convergent-subduction.
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eraser
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shark
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gift
Win 25 points!
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banana
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15
What is radiometric dating?
Comparing the amount of radioactive form of the element (parent atoms) of a rock or fossil to the decayed product (daughter atoms).
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15
What is relative dating?
Studying the relationships between rock units. Find two widely separated rock units and compare the fossils found in the rocks. Older fossils are the lowest.
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15
What are the two types of fossils and give an example?
1) Remain/Body Fossils- examples are shells, teeth, bones, fur or feathers. 2) Imprint Fossils- examples are footprints, eggs, leaves and feces.
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15
What is a half life?
Each element has a set amount of time that half of the radioactive parent atoms decay into daughter atoms.
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15
What is an independent variable?
The variable that you CHANGE (taped thumb)
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15
Why are ice cores excellent tools to learn about past environments?
Ice Cores are undisturbed, preserved the history of our climate.